[Fixed]-Django order by integer value, not string value of choices field

You shouldn’t rely on changing database data to adapt to the way you want to display in the template. If you sort on a CharField that contains integer strings, it would only sort on lexicographic order, which is not what you want, like 21 is smaller than 3 because 3 is larger by comparing the first digit.

The solution is not that hard, just change avg_rating to IntegerField or better, DecimalField, which is specialized in dealing with human readable numbers. If you want to add something fancy in template, you could always write a custom template tag to show extra stuff around the numbers.

Read python doc about what is Decimal, and read django doc about how to create custom template tag.